arch/powerpc/platforms/book3s/Kconfig

File Facts

System

Linux kernel

Corpus path

arch/powerpc/platforms/book3s/Kconfig

Extension

[no extension]

Size

573 bytes

Lines

16

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: build/configuration rule

Status

atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
config PPC_VAS
	bool "IBM Virtual Accelerator Switchboard (VAS)"
	depends on (PPC_POWERNV || PPC_PSERIES) && PPC_64K_PAGES
	default y
	help
	  This enables support for IBM Virtual Accelerator Switchboard (VAS).

	  VAS devices are found in POWER9-based and later systems, they
	  provide access to accelerator coprocessors such as NX-GZIP and
	  NX-842. This config allows the kernel to use NX-842 accelerators,
	  and user-mode APIs for the NX-GZIP accelerator on POWER9 PowerNV
	  and POWER10 PowerVM platforms.

	  If unsure, say "N".

Annotation

• Atlas domain: Architecture Layer / arch/powerpc.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.